Post a few pictures of the bike. Like, drive side photo showing the shape of the frame. Also detail pics can assist. Like, the way the cables run, the brake bridge, any gussets, tube junctions etc. Anything that might set it apart from another brand when we piece it all together.
Serial numbers are useful for dating the bike once we have an idea what it is. Otherwise, you might be lucky that someone recognises the serial number format though with Taiwanese bikes, that would be a lottery win.
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